python笔记：匿名函数和闭包 <p><span style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; background-color: rgb(255, 255, 255);">1 匿名函数（lambda)</span><br style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; white-space: normal; background-color: rgb(255, 255, 255);"/><span style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; background-color: rgb(255, 255, 255);">很可惜，只能支持一行</span><br style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; white-space: normal; background-color: rgb(255, 255, 255);"/></p><pre class="brush:python;toolbar:false">testFunc = lambda x,y: x+y print testFunc(1,1) #输出2</pre><p><span style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; background-color: rgb(255, 255, 255);">2 函数传递</span><br style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; white-space: normal; background-color: rgb(255, 255, 255);"/><span style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; background-color: rgb(255, 255, 255);">这真是太方便了。。</span><br style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; white-space: normal; background-color: rgb(255, 255, 255);"/></p><pre class="brush:python;toolbar:false">testFunc = lambda x,y: x+y def Test(): print "hello" funcList = [Test,testFunc] funcList[0]() print funcList[1](2,2)</pre><p><span style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; background-color: rgb(255, 255, 255);">3 内部函数</span><br style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; white-space: normal; background-color: rgb(255, 255, 255);"/></p><pre class="brush:python;toolbar:false">def Test(): i = 10 def innerFunc(): print i,"hello" i=9 innerFunc() Test()</pre><p><span style="font-family: 'lucida Grande', Verdana, 'Microsoft YaHei'; font-size: 14px; line-height: 23.8px; background-color: rgb(255, 255, 255);">内部函数中传入的参数，传的是引用，谨慎谨慎谨慎使用。最好是不用。</span><br/></p> 来自 大脸猫 写于 2016-05-17 14:52 -- 更新于2020-10-19 13:06 -- 0 条评论